The U.S. Post Office in Spring Valley, New York, is located on North Madison Street. It is a brick building from the mid-1930s that serves the ZIP Code 10977, covering the village of Spring Valley. Its Colonial Revival design, unique to Spring Valley among post offices in New York, emphasizes the Greek Revival precedents of the style. Its interior, like many other post offices built during the New Deal, features public art, in this case a mural. In 1989 it was listed on the National Register of Historic Places along with many other post offices in the state. Building The post office is located on the west side of North Madison Avenue between Church and Commerce streets, one block west of North Main Street (New York State Route 45) in downtown Spring Valley. The area is heavily developed, with many parking lots and commercial buildings. A few churches and houses are scattered among them. The terrain slopes slightly down to the east, into the valley of a small tributary of Pascack Brook. A row of mature trees rises along the rear of the property. To the south is the post office's parking lot, complementing a municipal lot across the street. The small lot on the Church Street corner is undeveloped and open. To the rear is a tire dealership. The building itself has two sections. The main block is a one-story five-by-five-bay steel frame structure on a low stone foundation with water table. It is faced in red brick laid in common bond. The central three bays are topped with a shallow-pitched gabled roof. A covered loading dock extends west from the southwest corner of that side. On the eastern (front) facade, the three bays under the gable form a slightly projecting pavilion. The main entrance is located in a slightly recessed round-arched entryway. Flanking it are similarly-shaped windows, consisting of paired four-over-four double-hung sash topped by a transom with radiating sash. Four brick pilasters with simple stone capitals divide the bays and mark the corners. They support a wooden frieze, with "United States Post Office Spring Valley New York 10977" spelled in affixed metal letters, below the pediment. The two wings have flat roofs pierced by brick chimneys topped with steel air handlers. On the front they have one six-over-six window. The west (rear) facade echoes the front with three large sash windows. Stone steps on a brick base,